Almost any folder would suit your neds, The Zeiss Ikon Contessa, with the Tessar lens and Compur dhutter is truly small, and with one of the easiest rangefinders, second only to the Werra, which is by far te best rangefinder around, any of the Retinas, the smallest I have is the IIa, which has the lever wind on the top instead of the bottom, and does not suffer from the shutter cocking rack problems that some oof the others do. or what about the Contina? very small and easily pocketable,, there is also the Voigtlander Vitessa barn doors range, larger than some but surberb with either the Color Skoper lens or the best lens around, the Ultron, These are just a few suggestions for classic pocketable cameras that I own and use a lot I The Werra is a lovely camera, very unusual and takes lovely sharp photographs, and has a shutter with a top speed of 750, and often accurate, and for some models such as the Werramat has a couple of different lenses, the 36 and 100, but I would not say it was a truly pocketable camera, small yes, but with the lens attached you would need a large pocket,
Richard